Swift - Data Types
Which of the following is the correct way to write the number ten million (10,000,000) in Swift using underscores for readability?
Which of the following is the correct way to write the number ten million (10,000,000) in Swift using underscores for readability?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand underscore usage
Swift allows underscores anywhere between digits to improve readability, but they must separate groups of digits logically.Step 2: Analyze each option
let number = 10_000_000 correctly groups digits as 10_000_000, which is standard for ten million.
Options B, C, and D have irregular groupings that do not represent the number correctly.Final Answer:
let number = 10_000_000 -> Option DQuick Check:
Underscores separate digit groups logically [OK]
Quick Trick: Use underscores to separate digits in groups of three [OK]
Common Mistakes:
- Placing underscores in inconsistent or invalid positions
- Grouping digits incorrectly leading to wrong values
- Assuming underscores affect the numeric value
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